Yak-15

Contents

YAK-15

On 9 April 1945, the Council of People's Commissars ordered the Yakovlev OKB to develop a single-seat jet fighter to be equipped with a single German Jumo 004 engine. To save time, Yakovlev based the new design (known as the Yak-3-Jumo or Yak-Jumo) on the latest version of his successful Yakovlev Yak-3 piston-engined fighter. The piston engine was removed and the jet engine was mounted underneath the forward fuselage so that its exhaust exited underneath the middle of the fuselage.

Yak-15

Note: Base stats only (no upgrade installed)

Rank

V (5)

Battle Rating

5.7

Type

Jet Fighter

Maximum Speed on height

724 km/h

4000 m

Maximum Altitude

13250 m

Turn Time

19.5 seconds

Rate of Climb

17.9 m/s

Takeoff Run

366 m

Armament

2x 23 mm NS-23 (120 rds)

Burst Mass

3.95 kg/s

To protect the fuselage, a steelheatshield was added to its bottom. The deeper forward part of the fuselage gave the aircraft a "pod-and-boom" configuration. Very few changes were made to the metal fuselage other than at the aircraft's nose. This was recontoured to accommodate the armament of two 23-millimeter (0.91 in) Nudelman-Suranov NS-23 autocannon, an additional fuel tank above the engine and the engine itself. No changes were made to the wings other than the elimination of the air intakes for the oil cooler and the bending of the front wing spar into an inverted U-shape to clear the engine. The vertical stabilizer was slightly enlarged, but the tail plane was unmodified.

The conventional landing gear was also unmodified other than the tail wheel which now used several steel leaf springs as shock absorbers. The Yak-Jumo carried a total of 590 kilograms (1,300 lb) of fuel.